40166938 has 16 divisors (see below), whose sum is σ = 69125760. Its totient is φ = 17147376.

The previous prime is 40166933. The next prime is 40166957. The reversal of 40166938 is 83966104.

It is a super-3 number, since 3×40166938³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40166897 and 40166906.

It is not an unprimeable number, because it can be changed into a prime (40166933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (4320360).

Almost surely, 2^40166938 is an apocalyptic number.

40166938 is a deficient number, since it is larger than the sum of its proper divisors (28958822).

40166938 is a wasteful number, since it uses less digits than its factorization.

40166938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40166938 is about 6337.7391868079. The cubic root of 40166938 is about 342.4702956106.

The spelling of 40166938 in words is "forty million, one hundred sixty-six thousand, nine hundred thirty-eight".